<!DOCTYPE HTML>
<html>
<head>
  <script type="application/javascript" src="pc.js"></script>
  <script type="application/javascript" src="/tests/dom/canvas/test/captureStream_common.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript;version=1.8">
  createHTML({
    bug: "1273652",
    title: "Video receiver still renders after renegotiation",
    visible: true
  });

  var pc1 = new RTCPeerConnection();
  var pc2 = new RTCPeerConnection();

  var add = (pc, can, failed) => can && pc.addIceCandidate(can).catch(failed);
  pc1.onicecandidate = e => add(pc2, e.candidate, generateErrorCallback());
  pc2.onicecandidate = e => add(pc1, e.candidate, generateErrorCallback());

  var v1, v2;
  var delivered = new Promise(resolve => pc2.ontrack = e => {
    // Test RTCTrackEvent here.
    ok(e.streams.length > 0, "has streams");
    ok(e.streams[0].getTrackById(e.track.id), "has track");
    ok(pc2.getReceivers().some(receiver => receiver == e.receiver), "has receiver");
    if (e.streams[0].getTracks().length == 1) {
      // Test RTCTrackEvent required args here.
      mustThrowWith("RTCTrackEvent wo/required args",
                    "TypeError", () => new RTCTrackEvent("track", {}));
      v2.srcObject = e.streams[0];
      resolve();
    }
  });

  runNetworkTest(function() {
    var h = new CaptureStreamTestHelper2D();
    var canvas = document.createElement('canvas');
    canvas.id = 'source_canvas';
    canvas.width = canvas.height = 10;
    document.getElementById('content').appendChild(canvas);

    v2 = createMediaElement('video', 'v2');
    is(v2.currentTime, 0, "v2.currentTime is zero at outset");

    h.drawColor(canvas, h.blue);
    var stream = canvas.captureStream(0);
    stream.getTracks().forEach(t => pc1.addTrack(t, stream));

    pc1.createOffer({})
    .then(offer => pc1.setLocalDescription(offer))
    .then(() => pc2.setRemoteDescription(pc1.localDescription))
    .then(() => pc2.createAnswer({}))  // check that createAnswer accepts arg.
    .then(answer => pc2.setLocalDescription(answer))
    .then(() => pc1.setRemoteDescription(pc2.localDescription))

    // re-negotiate to trigger the race condition in the jitter buffer
    .then(() => pc1.createOffer({})) // check that createOffer accepts arg.
    .then(offer => pc1.setLocalDescription(offer))
    .then(() => pc2.setRemoteDescription(pc1.localDescription))
    .then(() => pc2.createAnswer({}))
    .then(answer => pc2.setLocalDescription(answer))
    .then(() => pc1.setRemoteDescription(pc2.localDescription))
    .then(() => delivered)

    // now verify that actually something gets rendered into the remote video
    // element
    .then(() => h.waitForPixelColor(v2, h.blue, 128,
                                    "pcRemote's video should become green"))
    .then(() => {
      stream.requestFrame();
      h.drawColor(canvas, h.red);
      })
    .then(() => h.waitForPixelColor(v2, h.red, 128,
                                    "pcRemote's video should become green"))

    .catch(reason => ok(false, "unexpected failure: " + reason))
    .then(networkTestFinished);
  });
</script>
</pre>
</body>
</html>
